Whether you like your job or not, putting in several hours at the office every week can hurt you mentally and physically. Use these tips to be happy and healthy at work.

Make a lunch date with mama nature

Make a lunch date with mama nature

To slash stress during the workday, spend your summer lunch hours in a tree-lined neighborhood park. "Forest bathing," as Qing Li, M.D., a professor at the Nippon Medical School in Tokyo, calls it, has been shown to increase immune function by reducing stress and increasing levels of your body's natural killer cells that defend against viruses. No summer colds!

Refill your coffee mug

Refill your coffee mug

There's a reason you've never heard this expression: Time flies when you're... at the office. But coffee--even just the smell of it--helps. Scientists at the Smell & Taste Treatment and Research Foundation of Chicago found that inhaling a coffee scent made time seem like it was zipping by roughly 14 percent more quickly than it actually was. "Coffee is a stimulant associated with productivity and alertness," says neurologist and foundation director Alan Hirsch, M.D. So it could help you focus on your tasks, not the clock.